PARIS (AFP) — South Korea's Tom Kim carved out a one-shot lead at the rain-hit French Open on Thursday, enjoying the added bonus of an early sight of Le National course which will stage the 2024 Olympics golf tournament.

Kim, who was runner-up at the British Open earlier in the year, hit six birdies in seven holes to sign for a bogey-free 64 and hit the top of the leaderboard at seven under.

English pair Richard Mansell and Matthew Southgate were at six under along with Spaniard Alfredo Garcia-Heredia and Swede Joakim Lagergren, who was facing a 28-foot putt for par on the last hole when play was suspended in fading light.

"I didn't really expect anything," said Kim, making his debut at the tournament.

"It played really hard today with the rain, this course when it starts to rain and with the wind up, it's not easy."